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A kind of high-strength and large-deformation carbon fiber composite board and preparation method thereof

A carbon fiber and large-deformation technology, applied in construction, building components, building materials, etc., can solve the problems of reducing reliability and limiting the scope of use, and achieve the effect of light weight, easy access to material sources, and high tensile strength

Inactive Publication Date: 2021-06-15
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the deformation range of this composite structure is limited, and its large deformation range is only shown in the first half of the low stress stage. Since the fiber shell and the foam core are prone to cracking, large deformation cannot be achieved in the high stress stage, which greatly Limit its scope of use and reduce the reliability of its use

Method used

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  • A kind of high-strength and large-deformation carbon fiber composite board and preparation method thereof
  • A kind of high-strength and large-deformation carbon fiber composite board and preparation method thereof
  • A kind of high-strength and large-deformation carbon fiber composite board and preparation method thereof

Examples

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Effect test

preparation example Construction

[0026] A method for preparing a carbon fiber composite plate with high strength, large deformation and pre-designed deformation performance, which comprises the following steps:

[0027] (1) print an elliptical kernel with a 3D printer;

[0028] (2) Multiple groups (two for each group) of carbon fiber strips of equal width are wrapped to wrap the oval inner core, and the oval inner cores are knotted and fixed by twisted carbon fiber turnbuckles;

[0029] (3) Soak the structure wound and wrapped in step (2) in epoxy resin glue for 2-5 minutes, take it out after soaking and put it in a drying oven to cure for 72 hours at 60°C, or cure for a week at room temperature, and the product is ready.

[0030] In the step (3), before the knotted and fixed structure is soaked in epoxy resin glue, the carbon fiber cloths at both ends of the knotted and fixed structure should be fixed to prevent scattering during the soaking process.

[0031] Under the action of tension, the carbon fiber sk...

Embodiment 1

[0033] A carbon fiber composite panel with high strength, large deformation and pre-designed deformation performance, which consists of an elliptical core 1 (the span of the core is 24mm, the height is 4mm, the wall thickness of the core is 2mm, and the thickness of the middle support is 2mm), carbon fiber skin 2 and Composed of carbon fiber turnbuckle 3, the two ends of the oval inner core 1 are connected by carbon fiber turnbuckle 3, and the carbon fiber outer skin 2 is adhered to the upper and lower sides of the oval inner core 1;

[0034] A method for preparing a carbon fiber composite plate with high strength, large deformation and pre-designed deformation performance, which comprises the following steps:

[0035] (1) print an elliptical kernel with a 3D printer;

[0036] (2) Multiple groups (two for each group) of carbon fiber strips of equal width are wrapped to wrap the oval inner core, and the oval inner cores are knotted and fixed by twisted carbon fiber turnbuckles;...

Embodiment 2

[0041] In order to obtain greater deformation capacity, the carbon fiber composite panel is designed to be composed of an elliptical core 1 with a smaller span (the span of the core is 20mm, the height is 4mm, the wall thickness of the core is 2mm, and the thickness of the middle support is 2mm), carbon fiber skin 2 Composed of carbon fiber turnbuckle 3, the two ends of the oval inner core 1 are connected by carbon fiber turnbuckle 3, and the carbon fiber outer skin 2 is adhered to the upper and lower sides of the oval inner core 1;

[0042] A method for preparing a high-strength and large-deformation carbon fiber composite plate, comprising the following steps:

[0043] (1) print the elliptical inner core 1 with a 3D printer;

[0044] (2) Wrap the elliptical inner core 1 with two carbon fiber cloth strips of equal width, and tie the elliptical inner core 1 with a carbon fiber turnbuckle 3 to fix it;

[0045] (3) Soak the knotted and fixed structure in step (2) in epoxy resin...

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Abstract

The invention discloses a high-strength and large-deformation carbon fiber composite plate and a preparation method thereof. This high-strength and large-deformation carbon fiber composite panel is composed of an oval inner core, a carbon fiber skin and a carbon fiber turnbuckle. The core can be realized by a 3D printer to shape the carbon fiber skin into a wavy shape. The oval core is wrapped by multiple groups of carbon fiber skins, and each group of carbon fiber skins is made of a pair of carbon fiber cloth strips of equal width and bonded by epoxy resin On the surface of the core, the pair of carbon fiber skins are wound into carbon fiber turnbuckles at both ends of the core to prevent the peeling of the outer edges of the carbon fibers and the detachment between the skin and the core; finally, the wrapped carbon fiber composite structure is soaked in epoxy resin glue , and the carbon fiber composite board is obtained after curing. The carbon fiber composite plate material of the present invention is light in weight and high in strength, high in tensile strength and large in deformation capacity, and the stress-strain performance of deformation can be pre-designed by printing different core structures.

Description

technical field [0001] The invention relates to a high-strength and large-deformation carbon fiber composite plate and a preparation method thereof, belonging to the technical field of new material preparation. Background technique [0002] Traditional carbon fiber composite materials have the characteristics of light weight, high strength and corrosion resistance. They are ideal tensile materials and have been widely used in aerospace, civil engineering, ship engineering and other fields. However, due to its poor deformation ability and prone to brittle fracture damage, this short performance makes carbon fiber composites unable to meet the design requirements for deformation ability of existing specifications, which greatly limits its application in aerospace, civil engineering, and ship engineering. applications in the field. [0003] A novel sandwich composite structure consisting of a symmetrical corrugated carbon fiber composite and an extrudable foam core has been pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C2/40E04C2/26B33Y80/00
CPCB33Y80/00E04C2/26E04C2/40
Inventor 孙伟
Owner LANZHOU UNIVERSITY
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